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drm/amd/display: Null check for gamma correction. 

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yongqiang Sun 2018-01-19 11:59:16 -05:00 committed by Alex Deucher
parent 24a30505f3
commit f9549850a4
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
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@ -900,7 +900,8 @@ static bool dcn10_set_input_transfer_func(struct pipe_ctx *pipe_ctx,
if (plane_state->in_transfer_func)
tf = plane_state->in_transfer_func;
if (plane_state->gamma_correction->is_identity)
if (plane_state->gamma_correction &&
plane_state->gamma_correction->is_identity)
dpp_base->funcs->dpp_set_degamma(dpp_base, IPP_DEGAMMA_MODE_BYPASS);
else if (plane_state->gamma_correction && dce_use_lut(plane_state->format))
dpp_base->funcs->dpp_program_input_lut(dpp_base, plane_state->gamma_correction);